{"product_id":"honeywell-fs-psu-uni2450u-safety-manager-24-28-v-dc-50-a-1200-w-power-supply-module","title":"Honeywell FS-PSU-UNI2450U Safety Manager 24–28 V DC 50 A 1200 W Power Supply Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell FS-PSU-UNI2450U\u003c\/strong\u003e is a high-capacity switch-mode power supply module designed for use within Honeywell Safety Manager architecture and industrial control systems. Operating as a core power conversion element, it converts single-phase AC or DC mains voltage into a regulated 24–28 V DC output to supply field devices, Control Processor chassis, and I\/O modules in critical safety instrumented systems (SIS).\u003c\/p\u003e\n\u003cp\u003eEngineered to deliver up to 1200 W output power, the \u003cstrong\u003eFS-PSU-UNI2450U\u003c\/strong\u003e features active Power Factor Correction (PFC), short-circuit and overvoltage protection, and a built-in alarm relay contact for continuous status monitoring. The module supports flexible system topologies and can be deployed in non-redundant (N), redundant (N+1), or fully redundant (Nx2) power supply configurations to ensure maximum operational uptime.\u003c\/p\u003e\n\u003cp\u003eThe front panel includes a mechanical power switch, a four-position output voltage selector switch, status LEDs, and test points for output voltage verification. Designed for cabinet or carrier mounting in industrial automation environments, the unit incorporates active fan cooling to maintain stable continuous operation across demanding load profiles.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Power Capacity:\u003c\/strong\u003e Delivers continuous output power up to 1200 W with a maximum current rating of 50 A at 24 V DC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelectable Output Voltage:\u003c\/strong\u003e Four-position rotary selector switch provides adjustable output settings for 25.0 V, 26.0 V, 27.0 V, and 28.0 V DC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Input Voltage Range:\u003c\/strong\u003e Accepts 100–240 V AC nominal (85–265 V AC limits) and 110–250 V DC input sources.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActive Power Factor Correction:\u003c\/strong\u003e Built-in active PFC ensures high energy efficiency with a power factor exceeding 0.95 at 230 V AC full load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Alarm Monitoring:\u003c\/strong\u003e Dry contact alarm relay triggers on low output voltage (\u0026lt;22 V DC) or overtemperature conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRedundancy Support:\u003c\/strong\u003e Compatible with N, N+1, and Nx2 redundant power supply and feeder topologies in Safety Manager systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtective Features:\u003c\/strong\u003e Includes electronic short-circuit protection, overvoltage shutdown, and thermal protection with auto-recovery.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMain 24 V DC system power supply for Honeywell Safety Manager cabinets.\u003c\/li\u003e\n\u003cli\u003ePower source for Control Processor chassis, I\/O chassis, and Field Termination Assemblies (FTAs).\u003c\/li\u003e\n\u003cli\u003ePower distribution in Safety Instrumented Systems (SIS), Emergency Shutdown (ESD) systems, and Fire and Gas (F\u0026amp;G) protection architecture.\u003c\/li\u003e\n\u003cli\u003eRedundant field instrument and output loop power supply.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ch4\u003eGeneral\u003c\/h4\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eFS-PSU-UNI2450U\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Reference\u003c\/td\u003e\n\u003ctd\u003ePSU-UNI2450U\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003ePower Supply Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e3.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch4\u003eInput Electrical Ratings\u003c\/h4\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Voltage Range (AC)\u003c\/td\u003e\n\u003ctd\u003e100–240 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Limits (AC)\u003c\/td\u003e\n\u003ctd\u003e85–265 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Frequency\u003c\/td\u003e\n\u003ctd\u003e50 \/ 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Frequency Limits\u003c\/td\u003e\n\u003ctd\u003e45–65 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range (DC)\u003c\/td\u003e\n\u003ctd\u003e110–250 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Input Current\u003c\/td\u003e\n\u003ctd\u003e15 A at 100 V AC \/ 6 A at 230 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInrush Current\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 30 A (cold start at 230 V AC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Factor\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 0.95 at 230 V AC (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEfficiency\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 85% at full load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch4\u003eOutput Electrical Ratings\u003c\/h4\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e24–28 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Switch Settings\u003c\/td\u003e\n\u003ctd\u003e25.0 V DC, 26.0 V DC, 27.0 V DC, 28.0 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Output Current\u003c\/td\u003e\n\u003ctd\u003e50 A (at 24 V DC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Continuous Power\u003c\/td\u003e\n\u003ctd\u003e1200 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLine Regulation\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.2%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoad Regulation\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRipple and Noise\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 100 mV peak-to-peak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHold-up Time\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 20 ms at nominal AC input and full load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch4\u003eProtection and Diagnostics\u003c\/h4\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eShort Circuit Protection\u003c\/td\u003e\n\u003ctd\u003eElectronic current limiting with automatic recovery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOvervoltage Protection\u003c\/td\u003e\n\u003ctd\u003eShutdown above nominal setpoint (approx. 32 V DC limit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOvertemperature Protection\u003c\/td\u003e\n\u003ctd\u003eInternal thermal shutdown with automatic recovery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarm Contact Type\u003c\/td\u003e\n\u003ctd\u003ePotential-free changeover relay contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarm Contact Rating\u003c\/td\u003e\n\u003ctd\u003e30 V DC \/ 1 A, 125 V AC \/ 0.5 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarm Threshold\u003c\/td\u003e\n\u003ctd\u003eLow output voltage (\u0026lt; 22 V DC) or internal thermal fault\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch4\u003eEnvironmental and Cooling\u003c\/h4\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to +70 degC (derating applies above 50 degC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to +85 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003e5% to 95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling Method\u003c\/td\u003e\n\u003ctd\u003eInternal forced air (integrated cooling fans)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eConnections \/ Interfaces\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eInterface \/ Connector\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC\/DC Input Terminals\u003c\/td\u003e\n\u003ctd\u003eScrew terminals for Line (L), Neutral (N), and Protective Earth (PE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Output Terminals\u003c\/td\u003e\n\u003ctd\u003eHigh-current screw terminals for positive (+24V to +28V DC) and negative (0V) connections\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarm Contact Terminals\u003c\/td\u003e\n\u003ctd\u003eScrew terminals for potential-free relay status readback (NO\/NC\/COM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage Selector Switch\u003c\/td\u003e\n\u003ctd\u003e4-position rotary selector switch for setting 25V, 26V, 27V, or 28V DC output voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Test Points\u003c\/td\u003e\n\u003ctd\u003eFront panel test sockets for DC multimeter output voltage measurement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Pre-Installation Verification:\u003c\/strong\u003e Confirm that incoming mains power supply matches the rated input specifications (85–265 V AC or 110–250 V DC) and that the main breaker is locked out before installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Securely mount the module within the designated Safety Manager cabinet or power rack. Ensure unobstructed airflow at both top and bottom ventilation openings to maintain optimal fan cooling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtective Earth Grounding:\u003c\/strong\u003e Wire the Protective Earth (PE) terminal directly to the cabinet ground bus prior to making any power connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput and Output Wiring:\u003c\/strong\u003e Connect incoming AC or DC supply cables to the input terminal block using recommended wire gauges capable of handling up to 15 A continuous current. Connect the DC output terminals to the main power rail or feeder unit using high-current conductors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Selection:\u003c\/strong\u003e Adjust the 4-position rotary selector switch to the desired system voltage level (25 V, 26 V, 27 V, or 28 V DC) before energizing the system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlarm Contact Integration:\u003c\/strong\u003e Wire the potential-free alarm contact to the system monitoring channel or watchdog board to capture fault signals such as output undervoltage or overtemperature.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommissioning Inspection:\u003c\/strong\u003e Measure output voltage across front-panel test sockets using a calibrated digital multimeter before applying power to downstream processors or I\/O modules.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":52679430603115,"sku":"FS-PSU-UNI2450U","price":6000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/FS-PSU-UNI2450U_001_1200x1200_10bc8aa2-c274-4da7-885e-5e853f7d54d0.jpg?v=1786764614","url":"https:\/\/www.plcprotech.com\/products\/honeywell-fs-psu-uni2450u-safety-manager-24-28-v-dc-50-a-1200-w-power-supply-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}